Which three statements are true about Oracle Data Pump export and import operations?（）

• A、You can detach from a data pump export job and reattach later.
• B、Data pump uses parallel execution server processes to implement parallel import.
• C、Data pump import requires the import file to be in a directory owned by the oracle owner.
• D、The master table is the last object to be exported by the data pump.
• E、You can detach from a data pump import job and reattach later.